A handle is provided for a medical instrument having a tubular shaft. In the first configuration, a pair of non-motorized truck assemblies are attached to the deck, and the upper surface of the deck has a finger engaging region for a user’s fingers to engage and move the skateboard. The NIDS then examines the forwarded packets to identify the packets that have the pattern of interest. A telescopic jib portion is coupled to the riser portion. Moreover, the invention relates to a method of producing isopulegol, and to a method of producing menthol.